Replacement blade in top quality for professional use. The replacement blade from Dahle allows for precise cutting. The gray replacement blade head is suitable for Dahle rotary cutters with product codes XX.46.00500, XX.56.00500, XX.66.00500, XX.46.00507, XX.56.00508, XX.66.00508, as well as 00507-20045 and 00508-20051. You can find the product code on the label on the underside of the cutting table.